Revert "checkout as orphan for gh-pages"
Revert "checkout as orphan for gh-pages"

This reverts commit 4a8fe28f797897a90b6ac7378dd4be43f1d72f52.

DougFirErickson/PDAL,DougFirErickson/PDAL,verma/PDAL,mtCarto/PDAL,DougFirErickson/PDAL,verma/PDAL,boundlessgeo/PDAL,verma/PDAL,verma/PDAL,mpgerlek/PDAL-old,mpgerlek/PDAL-old,mtCarto/PDAL,lucadelu/PDAL,jwomeara/PDAL,radiantbluetechnologies/PDAL,Sciumo/PDAL,lucadelu/PDAL,jwomeara/PDAL,boundlessgeo/PDAL,radiantbluetechnologies/PDAL,Sciumo/PDAL,verma/PDAL,mtCarto/PDAL,boundlessgeo/PDAL,jwomeara/PDAL,Sciumo/PDAL,Sciumo/PDAL,radiantbluetechnologies/PDAL,verma/PDAL,boundlessgeo/PDAL,lucadelu/PDAL,jwomeara/PDAL,lucadelu/PDAL,mpgerlek/PDAL-old,radiantbluetechnologies/PDAL,mtCarto/PDAL,DougFirErickson/PDAL,mpgerlek/PDAL-old,verma/PDAL